What is the process to file for a litigation of disputed property?

Without agreement i took rent house and now cleared my deposit amount what i payed to the landlord now again he asking need to pay more 12000 for next month rent and other charges

Sir, In family are 2 brothers Rohit & Somesh. Rohit is in defense and Somesh in corporate. There is a plot on name of mother. It is mutual verbally agreed in family to build a house on the plot., Somesh would build home & Rohit to look after all house hold expenses. After that Somesh would gift back the property on mother's name. To execute plan Mother make a gift deed to transfer plot to Somesh to build the home. Rohit also paid home loan fm his savings (bank receipt avl) After settlement of home loan somesh is playing foul and refuses to tx properly. Advice legal options available with Rohit and mother. Mother also wants somesh to tx back property on her name as initially the plot was on her name. Pls advise.

My father had purchased a DDA flat from the original allottee in 1992. The flat was allotted in 1991. In 2017, when we applied for freehold, DDA informed that they have not given possession of the flat to the first allottee as some payments were pending. In 2017 they also issued a notice to us to vacate the flat. We gave a reply that we will pay the pending dues and regularise the flat in my father's name. Thereafter, we received a notice last week to come to DDA with original paper. In all these years (25 years) we have never received any notice from DDA to pay the dues or to inform us that they have not given possession of the flat. The notice in 2107 was the first notice. Is DDA right in asking us to vacate the flat after 25 years for non payment of some amount when they had never sent any notice for payment earlier and they got to know about it when we applied for freehold?